Active Valve Preload Adjustment for Stable Operating Set Points
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Solution Overview
Problem
Conventional valve shimming methods for adjusting spring preload are time-consuming and difficult to modify during fluid system operation, leading to variations in steady-state performance.
Innovation Solution
A system with a moveable component, biasing member, and actuator connected to a controller, allowing for active adjustment of preload through mechanical advantage devices like levers or piezoelectric actuators, enabling on-the-fly adjustments without shutting down the fluid supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional shimming methods are used to adjust valve spring preload, then the valve can be adjusted during initial installation, but the process is time-consuming and cannot be modified during system operation
Solution Approach 1:
The patent transforms the static valve spring preload adjustment into a dynamic process by introducing an actuator that can modify the preload member position during system operation. The moveable component allows continuous adjustment of the preload force without requiring system shutdown, converting a one-time installation task into an adaptable operational parameter.
Solution Approach 2:
The patent replaces manual mechanical shimming operations with an automated actuator system. The actuator, controlled by a controller, substitutes human intervention and manual tool operations, enabling precise preload adjustment without the time-consuming nature of conventional shimming methods.
2Manufacturing precision
If manual adjustment screw or shims are used for valve preload, then initial installation adjustment is possible, but additional factors in valve design lead to variation in steady-state performance
Solution Approach 1:
The patent implements a feedback control system where the controller monitors system operation and adjusts the actuator accordingly. This closed-loop approach compensates for variations in valve design factors and maintains consistent steady-state performance by dynamically adapting the preload setting based on actual system conditions.
Solution Approach 2:
The patent enables dynamic modification of the preload parameter during operation rather than relying on fixed manufacturing settings. The actuator system allows the preload force to be adjusted in response to changing operational conditions, maintaining optimal performance despite variations in valve design or environmental factors.
3Ease of manufacture
If conventional shimming methods are used, then valve installation is straightforward, but adjusting preload during operation is difficult or impossible
Solution Approach 1:
The patent introduces dynamic adjustability to an otherwise static valve assembly. The moveable component and actuator system enable the preload member position to be changed during operation, transforming a fixed manufacturing configuration into an adaptable operational system without complicating the basic assembly process.
Solution Approach 2:
The patent makes the valve assembly multi-functional by combining the basic valve function with adjustable preload capability. The actuator system serves multiple purposes: it can adjust preload during operation, compensate for wear, and adapt to changing system requirements, making the assembly versatile while maintaining manufacturing simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and dynamic adjustment of valve operating set points based on real-time feedback, improving accuracy and performance by compensating for load and temperature changes without system disturbance.
Implementation Method 1
the actuator can include a piezoelectric actuator
Data Source
AI summary
In accordance with at least one aspect of this disclosure, a system can include, a moveable component configured to move between one or more positions, a biasing member operatively connected on a first side to bias the moveable component to a respective one of the one or more positions, and a preload member operatively connected to provide a force to a second side of the biasing member. An actuator can be operatively connected to move the preload member in response to a signal from a controller.